luhherm
contestada

The stretch of a spring varies directly to the weight attached to it.
A 45 pound weight stretches the spring 2.5 inches.
Which of the following is the correct weight it would take to
stretch the spring 7 inches?
A. 17.5 lbs.
B. 112.5 lbs.
C. 126.0 lbs.
D. 315.0 lbs